Bridge Abutment Data Form

Access the Bridge Abutment Data form, with the Bridge Model license enabled, as follows:

Click the Bridge menu > Abutments command, or on the Bridge Wizard select the Abutment Definitions item and click the Define/Show Abutments button, to display the Define Bridge Abutments form.
Click the Add New Bridge Abutment, or highlight the name of a previously defined bridge abutment definition in the Bridge Abutments area of the form and click the Add Copy of Bridge Abutment or Modify/Show Bridge Abutment button, to display the Bridge Abutment Data form.

After the abutment has been defined, assign it to the bridge model using Bridge Objects.

Use the Bridge Abutment Data form to define the bridge abutment for your model.

Bridge Abutment Name edit box. Use the default or enter a new name for the abutment definition.
Units drop-down list. Use the displayed units or select new units from the drop-down list.
Bridge Abutment is Define By area. Specify how the bridge abutment is to be defined.

Link/Support Property option. Use this option to define the bridge abutment using a link/support property definition. Select an option from the drop-down list.
User Definition option. When this option is chosen, SAP2000 will define the abutment using the entries in the User Abutment spreadsheet area of the form:

User Abutment spreadsheet area. Use the cells in this area of the form to specify translational and rotational releases as free, fixed, or with partial fixity. Click in a cell in the Release Type column and select the appropriate type from the drop-down list. If partial fixity is selected, also specify a stiffness value in the cells in the Stiffness column.

Horizontal Reference Line Location. Choose the horizontal placement of the abutment supports:

At Reference Line Location option. The abutment support is placed at the reference line. The reference line passes through the reference point in the bridge section.
At Each Girder Location option. The abutment supports are placed at each girder location.
Equally Spaced Over Bridge Width option. When this option is chosen, specify the number of abutment supports in the Number of Supports edit box. SAP2000 will then place that number of abutment supports at equal intervals over the width of the bridge.

Include Vertical Diaphragm check box. When this check box is checked, SAP2000 will close the ends of the bridge. Use the Diaph Property drop-down list to select a previously defined diaphragm property for the vertical diaphragm. This closure is applicable only to area object and solid object models. It does not apply to spine models.